--- product_id: 5243939 title: "CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators" brand: "extech" price: "450.57 DT" currency: TND in_stock: true reviews_count: 13 category: "Extech" url: https://www.desertcart.tn/products/5243939-cb10-ac-circuit-breaker-finder-and-receptacle-tester-professional-grade store_origin: TN region: Tunisia --- # Pinpoints breakers w/o power off Two-pass calibration for 100% accuracy Ready out-of-box with 9V battery CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators **Brand:** extech **Price:** 450.57 DT **Availability:** ✅ In Stock ## Summary > ⚡ Master your breakers like a pro—no more guesswork, just precision. ## Quick Answers - **What is this?** CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators by extech - **How much does it cost?** 450.57 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/5243939-cb10-ac-circuit-breaker-finder-and-receptacle-tester-professional-grade) ## Best For - extech enthusiasts ## Why This Product - Trusted extech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual-Scan Calibration:** Two-pass sensitivity tuning eliminates false signals for pinpoint accuracy in crowded panels. - • **Compact & Ready to Use:** Ergonomic design with included 9V battery means you’re set to map your electrical system immediately. - • **Manual Sensitivity Control:** Adjust signal detection to cut through electrical noise and trace even complex wiring paths with confidence. - • **Precision Circuit Targeting:** Locate the exact breaker or fuse without flipping switches—save time and avoid guesswork. - • **Integrated GFCI Safety Check:** Test outlets for wiring faults and trip GFCI breakers with a dedicated button—professional-grade safety audit. ## Overview The Extech CB10 AC Circuit Breaker Finder and Receptacle Tester is a professional-grade diagnostic tool designed for both home and industrial use. It features a two-pass calibration system for precise breaker identification without power interruption, an integrated GFCI tester to detect wiring faults, and a manual sensitivity dial to eliminate false signals. Ready to use out of the box with a 9V battery, this compact device streamlines electrical troubleshooting and safety testing, making it an essential tool for electricians and savvy homeowners alike. ## Description Product Description The Extech CB10 is the ultimate time-saver for homeowners and electricians alike. This 2-in-1 diagnostic tool eliminates the frustration of flipping every switch in your breaker box just to find one specific circuit. Simply plug the transmitter into your target outlet and run the receiver over the panel. The audible and visual alerts, combined with a manual adjustable sensitivity dial, ensure you find the right breaker or fuse on the first try, even in high-density panels where automatic testers often fail. Beyond locating breakers, the CB10 acts as a comprehensive safety auditor for your home. The integrated receptacle tester features a dedicated GFCI test button and a multi-LED display that identifies correctly wired outlets and five different fault conditions: open ground, open neutral, open hot, hot/ground reverse, and hot/neutral reverse. Whether you are troubleshooting a dead outlet, installing new light fixtures, or performing a professional home inspection, the CB10 provides the reliable accuracy you need to work with confidence. The compact, ergonomic design allows the transmitter and receiver to snap together for easy storage, and the package comes complete with a 9V battery, so you can start mapping your electrical system immediately. From the Manufacturer Locates the correct circuit breaker or fuse without turning off the power. Simply plug the transmitter into an outlet and trace for the correct breaker at the electrical box. Transmitter also verifies wiring and tests GFCI operation. Bright red and green LEDs indicate if receptacle is correctly wired or will indicate which of the 5 fault conditions exists. Convenient storage position for transmitter/receptacle tester. Complete with Receiver, GFCI Transmitter, and 9V battery. Review: Works through walls too - I just bought this to use in my older house and it has worked great for finding the breakers and even wires in the wall! I find for the walls it can be a little hard to trace as I feel like the wires have to be within 1-1.5" deep with the sensitivity maxed out and you can loose the signal being as little as 1/4" off from the trail, but it totally works and let me trace a few wonky paths so I could figure out exactly where the wire was moving in my walls and even to a buried junction box. I also really like the manual adjustment since it lets me hone in the breaker real quick and I don't have to scan the breaker like you see with the auto-adjusting ones. I just go to the breaker on about "half" sensitivity, move fast, and when I hear the beep I just drop it to lowest immediately and find it every time. Also due to the manual aspect of it, it let me figure out that a circuit was being served by 2 breakers and tracing which wire went where within the 14/3 wire sleeve itself since I could turn the sensitivity down so low. The socket tester works well too from the few tries. Only real issue I noticed is if you have any of the circuit based dimmers that basically everyone uses now since LED lights need them for dimming, it'll also send a signal in the line that this can pick up. It's real obvious though as it beeps much faster and sounds funny compared to how the device normally works, so either just ignore it and follow the normal beeps or turn off the light, surge protector, etc. Great device and wish I had one sooner to figure out all this weird wiring and no constant breaker switching either! Review: Superb tool for solving basic home wiring issues - This has helped me unravel the mysteries of my house wiring. You plug the transmitter end into an outlet (three prong) and go hunting for the right breaker with the sniffer. You can buy adapters to plug into light sockets and even alligator clips to attach the transmitter to bare wires if you are feeling bold. The tool has a sensitivity knob on the sniffer. This is the part that you get a feel for when using the tool. If you have the sensitivity too high, it's difficult to identify the exact right breaker within the breaker panel. The trick is to lower the sensitivity while you are sniffing until it only beeps when you hover over a single breaker. Bear in mind there is a proper orientation indicated on the end of the sniffer. Now I have one of these, I wouldn't be without it. It's really useful and as you get better with it, you can use it for tracing wires and all sorts of things to get you out of a bind. Highly recommended. ## Features - PRECISION BREAKER IDENTIFICATION: Quickly and accurately locate the correct circuit breaker or fuse without turning off power. Ideal for labeling residential or industrial electrical panels. - TWO-PASS CALIBRATION TECHNOLOGY: To ensure 100% accuracy, scan all breakers once to calibrate sensitivity, then scan a second time to pinpoint the specific circuit. (Prevents "incorrect" or "multiple" breaker signals). - INTEGRATED GFCI TESTER: The transmitter acts as a professional-grade outlet tester. It detects common wiring faults (Open Ground, Open Neutral, Reverse Polarity) and includes a dedicated GFCI trip button to test safety outlets. - SENSITIVITY ADJUSTMENT: Features a variable sensitivity dial on the receiver, allowing you to fine-tune the signal to eliminate "ghost" chirps caused by electrical noise in crowded panels. - READY OUT OF THE BOX: Includes a 9V battery and a rugged receiver/transmitter set. Pro-Tip: If the unit does not beep, ensure the 9V battery is snapped firmly into the terminal clips and the battery cover is locked. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0014FNWJG | | Best Sellers Rank | #224,300 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #327 in Circuit Testers | | Brand | Extech | | Brand Name | Extech | | Color | Green, Red | | Compatible Devices | Simply plug the GFCI Transmitter into an outlet and trace for the correct breaker at the electrical box | | Customer Reviews | 4.3 out of 5 stars 2,856 Reviews | | Global Trade Identification Number | 00793950400104 | | Included Components | CB10 | | Item Dimensions | 10.1 x 5.4 x 1.5 inches | | Item Weight | 0.02 Kilograms | | Item dimensions L x W x H | 10.1 x 5.4 x 1.5 inches | | Manufacturer | Extech | | Measurement Type | Voltmeter (for AC voltage) | | Minimum Operating Voltage | 110 Volts (AC) | | Model | 1218G94EA | | Part Number | 1218G94EA | | Power Source | Battery Powered | | Style | CB10 | | Style Name | CB10 | | UPC | 785533703542 793950400104 | | Unit Count | 1.0 Count | | Warranty Description | 1 Year | ## Product Details - **Brand:** Extech - **Color:** Green, Red - **Item Weight:** 0.02 Kilograms - **Power Source:** Battery Powered - **Style:** CB10 ## Images ![CB10 AC Circuit Breaker Finder and Receptacle Tester - Professional Grade GFCI Outlet Tester for Home & Industrial Use - Pinpoint Breakers and Fuses - Includes 9V Battery and LED Indicators - Image 1](https://m.media-amazon.com/images/I/71vSvjsm6AL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Can you use this to trace the outlet to its circuit breaker if the circuit breaker is damaged or off?** A: Unfortunately it can't. The CB 10 used to locate breakers from a energized outlet. The device needed to find a open, or deenergized circuit will have a tone generator built in, these are more commonly called wire tracers.They are a little more expensive but well worth the cost. **Q: I have outlets wired in series: some NM. some metal-shielded. Can I detect signal in accessible wires "halfway" to the breaker to confirm route??** A: You should be able to trace wiring that is not in a shielded metal conduit. I submit however, that your outlets are not wired in series, they are in parallel and perhaps daisy chained, but they will not be in series, nothing will work if they are. Remember the old Christmas tree lights that if one was bad or missing they all went out? That was series wiring. **Q: Can this trace a wire routing through the wall.** A: In answer to the question, the CB10 can not be used to trace a wire behind walls. There are instruments out there that are designed specifically to trace the location of hidden wires but are extremely expensive. **Q: can it be used to test another outlet to see if it's using the same line/breaker?** A: Thank you for your most recent email inquiry. Model CB10 can be used to identify what breaker an outlet is on. Please contact us if you a have any further questions. Thanks. Best Regards, Westtown Products ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works through walls too *by D***D on April 5, 2024* I just bought this to use in my older house and it has worked great for finding the breakers and even wires in the wall! I find for the walls it can be a little hard to trace as I feel like the wires have to be within 1-1.5" deep with the sensitivity maxed out and you can loose the signal being as little as 1/4" off from the trail, but it totally works and let me trace a few wonky paths so I could figure out exactly where the wire was moving in my walls and even to a buried junction box. I also really like the manual adjustment since it lets me hone in the breaker real quick and I don't have to scan the breaker like you see with the auto-adjusting ones. I just go to the breaker on about "half" sensitivity, move fast, and when I hear the beep I just drop it to lowest immediately and find it every time. Also due to the manual aspect of it, it let me figure out that a circuit was being served by 2 breakers and tracing which wire went where within the 14/3 wire sleeve itself since I could turn the sensitivity down so low. The socket tester works well too from the few tries. Only real issue I noticed is if you have any of the circuit based dimmers that basically everyone uses now since LED lights need them for dimming, it'll also send a signal in the line that this can pick up. It's real obvious though as it beeps much faster and sounds funny compared to how the device normally works, so either just ignore it and follow the normal beeps or turn off the light, surge protector, etc. Great device and wish I had one sooner to figure out all this weird wiring and no constant breaker switching either! ### ⭐⭐⭐⭐⭐ Superb tool for solving basic home wiring issues *by R***A on June 5, 2025* This has helped me unravel the mysteries of my house wiring. You plug the transmitter end into an outlet (three prong) and go hunting for the right breaker with the sniffer. You can buy adapters to plug into light sockets and even alligator clips to attach the transmitter to bare wires if you are feeling bold. The tool has a sensitivity knob on the sniffer. This is the part that you get a feel for when using the tool. If you have the sensitivity too high, it's difficult to identify the exact right breaker within the breaker panel. The trick is to lower the sensitivity while you are sniffing until it only beeps when you hover over a single breaker. Bear in mind there is a proper orientation indicated on the end of the sniffer. Now I have one of these, I wouldn't be without it. It's really useful and as you get better with it, you can use it for tracing wires and all sorts of things to get you out of a bind. Highly recommended. ### ⭐⭐⭐⭐ perfectly adequate easy to use tool. *by M***R on March 13, 2014* ............................ understand I am not a professional electrician but I am a quality oriented handyman who specializes in simple to moderate electrical projects and I use devices like this to assist me in my completion of any particular electrical project. from what I personally understand about EXTECH is that they are not an ultra professional grade manufacturer of electrical tools and testing equipment but they are more of an upper midlevel or pro consumer grade tool and equipment manufacturing and design company. EXTECH is still a quality product for the home handyman to the everyday residential grade pro electrician but for high dollar pro grade commercial / industrial or / institutional electricians who wire high rises / schools / malls / hospitals and such this unit may be a little lacking in features or quality. if you need a higher quality grade circuit breaker tester I recommend or prefer brands like FLUKE / KLEIN / TRIPLETT / or AMPROBE .this again is just my personal opinion though so please remember that when making your final purchase decision. ............................. here are the things I like about this unit. . (thing one) it has a plug unit that tests wiring polarity issues with colored L.E.D lights. (thing two) it tests GFCI outlets with the red button on top of the plug . (THING THREE) it finds or traces breakers in your panel and matches them to the circuit that the green plug unit is connected to . ..............................these are the things I personally don't like about this device. (thing one) its iffy looking build quality especially on the sensor wand. (thing two) the fact that the green plug unit doesn't beep when plugged in unlike similar SPERRY TESTORS that I have where the plug unit beeps and has a flashing red L.E.D light on the front these features obviously are not 100 percent necessary but they do help and make a minor difference but one thing to understand is my SPERRY TESTORS do not test receptacle polarity. (thing three) the sensitivity wheel on the wand unit seems weak and doesn't seem to have an equal or effiecient adjustment range across its entre range of adjustability. in summation this is not a bad unit it gets the job done but it does have some very minor hindering issues that finicky users or ultra high end professional electricians might find lacking. . ## Frequently Bought Together - Extech - 1218G94EA - CB10 Circuit Breaker Finder, Locates fuses/Breakers, Tests receptacles and GFCI Circuits - Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical Receptacles - Klein Tools NCVT1P Voltage Tester, Non-Contact Low Voltage Tester Pen, 50V to 1000V AC, Audible and Flashing LED Alarms, Pocket Clip --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/5243939-cb10-ac-circuit-breaker-finder-and-receptacle-tester-professional-grade](https://www.desertcart.tn/products/5243939-cb10-ac-circuit-breaker-finder-and-receptacle-tester-professional-grade) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-05*